40727640 has 64 divisors (see below), whose sum is σ = 128620800. Its totient is φ = 10288512.

The previous prime is 40727633. The next prime is 40727647. The reversal of 40727640 is 4672704.

40727640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40727633) and next prime (40727647).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 40727598 and 40727607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40727647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6652 + ... + 11211.

It is an arithmetic number, because the mean of its divisors is an integer number (2009700).

Almost surely, 2^40727640 is an apocalyptic number.

40727640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40727640 is an abundant number, since it is smaller than the sum of its proper divisors (87893160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40727640 is a wasteful number, since it uses less digits than its factorization.

40727640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17896 (or 17892 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 40727640 is about 6381.8210567204. The cubic root of 40727640 is about 344.0564852261.

The spelling of 40727640 in words is "forty million, seven hundred twenty-seven thousand, six hundred forty".